CVE-2026-34000

A flaw was found in the X.Org X server. This out-of-bounds read vulnerability in the XKB geometry processing, specifically within the CheckSetGeom and XkbAddGeomKeyAlias functions, allows an attacker to read uninitialized or out-of-bounds memory. An attacker with a connection to the X11 server,...

UBUNTU-CVE-2026-33999

A flaw was found in the X.Org X server. This integer underflow vulnerability, specifically in the XKB compatibility map handling, allows an attacker with local or remote X11 server access to trigger a buffer read overrun. This can lead to memory-safety violations and potentially a denial of servi...

OESA-2026-1587 libX11 security update

Core X11 protocol client library. Security Fixes: A buffer overflow flaw was found in X.Org and Xwayland. If XkbChangeTypesOfKey is called with a 0 group, it will resize the key symbols table to 0 but leave the key actions unchanged. If the same function is later called with a non-zero value of...

AIX : Multiple Vulnerabilities (IJ57231)

The version of AIX installed on the remote host is prior to APAR IJ57231. It is, therefore, affected by multiple vulnerabilities as referenced in the IJ57231 advisory. - A flaw was identified in the X.Org X server's X Keyboard Xkb extension where improper bounds checking in the XkbSetCompatMap...

Security Bulletin: AIX Xorg X Server is vulnerable to memory corruption or a denial of service (CVE-2025-62230, CVE-2025-62231)

Summary Updated Feb 24 2026: New iFix for 7.3 TL3 SP2 provided with correct fileset prereqs. Updated the affected fileset levels to show that 7.3 TL3 SP2 is vulnerable. Vulnerabilities in Xorg X Server could cause a memory corruption or denial of service CVE-2025-62230, CVE-2025-62231...

AIX : Multiple Vulnerabilities (IJ57232)

The version of AIX installed on the remote host is prior to APAR IJ57232. It is, therefore, affected by multiple vulnerabilities as referenced in the IJ57232 advisory. - A flaw was identified in the X.Org X server's X Keyboard Xkb extension where improper bounds checking in the XkbSetCompatMap...

AIX Xorg X Server is vulnerable to memory corruption or a denial of service (CVE-2025-62230 CVE-2025-62231)

IBM SECURITY ADVISORY First Issued: Thu Feb 19 16:07:09 CST 2026 |Updated: Tue Feb 24 10:50:50 CST 2026 |Update: New iFix for 7.3 TL3 SP2 provided with correct fileset prereqs. | Updated the affected fileset levels to show that 7.3 TL3 SP2 is | vulnerable. The most recent version of this document...

OPENSUSE-SU-2026:20198-1 Security update for xorg-x11-server

This update for xorg-x11-server fixes the following issues: - CVE-2025-62229: Fixed use-after-free in XPresentNotify structures creation bsc1251958. - CVE-2025-62230: Fixed use-after-free in Xkb client resource removal bsc1251959. - CVE-2025-62231: Fixed value overflow in Xkb extension...

MiracleLinux 7 : xorg-x11-server-1.20.4-18.el7 (AXSA:2022-3654:02)

The remote MiracleLinux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2022-3654:02 advisory. xorg-x11-server: X.Org Server ProcXkbSetGeometry out-of-bounds access CVE-2022-2319 xorg-x11-server: out-of-bounds access in ProcXkbSetDeviceInfo...

MiracleLinux 9 : xorg-x11-server-Xwayland-22.1.9-5.el9 (AXSA:2024-8022:01)

The remote MiracleLinux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the AXSA:2024-8022:01 advisory. xorg-x11-server: Out-of-bounds write in XIChangeDeviceProperty/RRChangeOutputProperty CVE-2023-5367 xorg-x11-server: out-of-bounds memory reads/writ...

MiracleLinux 9 : xorg-x11-server-1.20.11-11.el9, xorg-x11-server-Xwayland-21.1.3-3.el9 (AXSA:2023-4916:01)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2023-4916:01 advisory. xorg-x11-server: X.Org Server ProcXkbSetGeometry out-of-bounds access CVE-2022-2319 xorg-x11-server: out-of-bounds access in ProcXkbSetDeviceInfo...

MiracleLinux 9 : xorg-x11-server-1.20.11-32.el9_6 (AXSA:2025-11052:08)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2025-11052:08 advisory. X.Org X11 X server CVE-2025-62229 A flaw was found in the X.Org X server and Xwayland when processing X11 Present extension notifications. Improper...

AlmaLinux 8 : xorg-x11-server (ALSA-2025:19434)

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2025:19434 advisory. xorg: xmayland: Use-after-free in XPresentNotify structure creation CVE-2025-62229 xorg: xwayland: Use-after-free in Xkb client resource removal...

xorg: xwayland: Use-after-free in Xkb client resource removal

A flaw was discovered in the X.Org X server’s X Keyboard Xkb extension when handling client resource cleanup. The software frees certain data structures without properly detaching related resources, leading to a use-after-free condition. This can cause memory corruption or a crash when affected...

Moderate: Red Hat Security Advisory: xorg-x11-server-Xwayland security update

An update for xorg-x11-server-Xwayland is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severit...

Moderate: Red Hat Security Advisory: xorg-x11-server-Xwayland security update

An update for xorg-x11-server-Xwayland is now available for Red Hat Enterprise Linux 9.4 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, ...

RHEL 9 : xorg-x11-server-Xwayland (RHSA-2026:0034)

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:0034 advisory. Xwayland is an X server for running X clients under Wayland. Security Fixes: xorg: xmayland: Use-after-free in XPresentNotify structure...

SUSE-SU-2025:4426-1 Security update for xkbcomp

This update for xkbcomp fixes the following issues: - CVE-2018-15863: NULL pointer dereference triggered by a a crafted keymap file with a no-op modmask expression can lead to a crash bsc1105832. - CVE-2018-15861: NULL pointer dereference triggered by a crafted keymap file that induces an...

[SECURITY] Fedora 42 Update: xkbcomp-1.5.0-1.fc42

X.Org XKB keymap compiler...

CLSA-2025-1765223770 xorg-x11-server: Fix of 4 CVEs

CVE-2025-9632: fix buffer overflow in XkbSetCompatMap - CVE-2025-62229: fix use-after-free condition due improper error handling during notification creation leading to DoS - CVE-2025-62230: fix use-after-free condition due freeing certain data structures without properly detaching related...